Multicylinder internal-combustion engine.



NIULTICYLINDER INTERNAL COMBUSTION ENGINE.

APPLICATION E ILED MAY I9, 1919.

2 sums-s115121' 1.

W. l. STILI..

MQLUCYUNDER INTERNAL coMBusnoN ENGINE.

` APPLICATION F|LED MY|9,|919. l

1,324,183-, Pzmntcd Dec. 9,1919.

INVENTOR.

l v BY.

WILLIAM JSEPH STILL. OF LONDON. EN'GLNH MULTCYLINBER INTERNAL-CUMBUSTN ENGNE.

Application filed Muy 19.

To all 107mm it may mz/361m Bo if known that T, WILLIABI i Joni-:ril

' S'rnJi, oi' T Princes 5in-eet, hindonyS. 1.,

Eng-hind. engineer, have inrentd certain non' und n xf`ui Improvements in Uuitirylnb der Internal-Coinbnstion Engines, of which the V'r'oiioiviint is n sporificntion. Thin invcnion relates to limiti-cylinder internal combustion engines of that gehend chnranftrr dofsrrihed in tho speoiiienion of my prior Britrvis'h Letten intont Nos. 25,2556 oi' 191() und 28,4752 of 1%)12 where strani genen nod whoilyor in port fronihent derived from the cylinder wziiis :ind combustion exhnihet i5 utili/.cd :it- /ho nicks of the vornimmt-ion engine, piston und opernes VoKpnnsiYi-iy.

In ranch engines where if, haw. been preposed hitheixo to profido `for compound exo pzinaion of the Stoom or the exhaust gases from combustion engine cylinders u. speeini oxpzmbio'n cyiii'ider or cyiindors hns boon provided.

The object' o'fi the. present invention io provide :in iinprovolfi moans of steam com* miinding in .Quoh engines, und tho invenion ronsists. in 'mriculzi ii r zingrcniena ior rom-- pounding Whorehy tho strain! endl oi the combustion engine cylinders. :done ure used, ono or somo of th'ein operating' :is high pres- .Sure Steam cylinders :ind another or othorf: nssontinily providing n greater totni Yoluii\o---as n low pressure slcxini cylinder or cylinders.

This muy bo iieoompiixhed 'by providing @im combustion onglino =,'inders o it diii'orent sie ` which forms :L rccoiror for the steam the latter loaves or oners the, oyiinder.

Such a jacket niils many useful funcT tions. l'n the first pince; the. stamm supplied to it hearts the ends of the. cylinders before theycngne is started up .as a combustion engine. wWhon the engine. is running :iS n coinbnstion engine it serres to keria `he steam cylindor C001 and mbsf/raw@ heut absorbed hy Specification of Letters Patent Pawn tod Docu i), 'fc

Serial No. 299.5204.

the ojsinder Wniis from die pis-ion or tous. The jaiekets :ifm-@Suid iiiero'for con stride chambers for maintaining compara tirely constant pressures in the cj'iigziers.

lil :whond be noted. honorer, hui ii, is no@ vnew to mrodnco sionm into jauni rounding the, comhnxtion :cono of the ejviin der-4 :is wiii oe ,sven upon reerenmx ro prior specification No. 2535i? of li' heiiforo zii `iuded to. swim being; inroducod ino the jaoii ets; in this prior ruso with the ohjoc; o'f @ooiingr the cylinder und i'sei" becoming; Suporhented.

Tn the :ireoinpnflying d nwing'si i 'hn-r@ iihixirnted :in einhodiment of ho invention dizlgrznlnnziiirniiy. Figure l being :i Soeionni diagram of :i Six eyiindor :irrnnggefinenh the wrtion beingr when iruniii'ersely o*l he'ejfi-- infieren :md Fig. l is :i iongiiidinni oe'ionai .'iw of the forni oi' faire i propose. io ehi-1 ploy for eoniroihng; he zidinision und m;-

hzinstof die :ifeann io :ind Yvoir. the. eyiindeni. big: 3 is :i vel-tieni scc'uonni ww.' oi? ny i improved engine und of :i Steam hiiriinr to whieh i, eonnerted.

i nient-shown ronsisi'rs of siii ryiin iori. o; ating upon tho two siroke rolnhns'ion eff Tho erzinks nre set oquziiiy :it apar@ iho iirriingqinent being auch hntwo of iho s cylinders whoo a' winks siro LSU@ our to the, oth `r iis high pre-asin@ sleiiin oriimio whiie the ronininingr Four cffiiuderr ronrz-i tute. 'he low prossimo ryiinderfs.

in i-he drawings the ,fwn high presmlro oji'iindorn nro designnied i-iik HP2 n' low pressure, cviiiiders :ire deg'imted iii LP :1nd LW. High. presnnre Simon :id'mi'ied to the brunch pipe S und ied in the vulve chest: of the iwo high provino cylinders iii und iii, Il iS hei'i :uhni'rd io iho eyiiiiders :ind ex'hzwsed 'froni Iii" :ind iii iindor control o the Yziiree' V1 und 'Y2 :eh will horenii'er more fniij.' npr-enr. The sic-:ini exhnmted from iho c viindors HP1 :ind HP2 to ihe juekois il and di und h5' reason of ihe disirihnting pipe. or duei D this exhaust si'ezini passes lio ihn jackets ..T"-J of the low prerimire. Cylinders Lind Li. iif. is then ndinited i0 sind eihniiied from The low pressure cylini'iors L'PM-L'lr under rontroi oi' mires Vgn-Y ihe exhunsit boing: hy wir ofi ihe exhaust. pipo E. The rzires 'V1- VG nro nii of the snm@ construetion hut the mires V- :md V2 of the high prossime. oyiinders hnvo insido admission IUD and outside exhaust to the jackets Jl and J2 u nle the valves VS-V of the low pressure cylinders have outside admission from the- -jackets and inside exhaust to the exhaust pipe E. This will be readily understood upon reference to Fig. 2 which shows one of the valves in section. In the case of the valves V1 and V2 the steam admission pipe S leads the steam to the port l whence it passes to the annular chamber -2 surrounding the pistonvalve 3 and as the valve operates in accordance with the usual principles with which .all engineers are familiar the steam passes through the ports 4 into the cylinder when the piston valve reaches the position I,shown in dottedV lines and exhausts again through these ports 4 to the jacket J2, for instance, and thence by the duct D to the otherjackets J3-J6 when thepiston valve moves again to the position shown in the drawings. In the case of the valves Varel" of the low pressure cylinders LPL-LP* the reverse is the case. The steam in the jackets passes to the cylinders when their respective valves are in the position shown in full in the drawings and when the piston valve 3 moves to the position shown in dotted lines this steam is exhausted through the port 1 and passes by Way of the pipe E to the condenser. v

The foregoing arrangement will be found 'to be very advantageous since it gives the maximum receiver space between the high pressure and lour pressure cylinders while also providing for the maximumA retreating prior to the use ot' the steam in the low pres sure cylinders. Should this reheating become excessive it can be controlled by providing Water chambers atthe bottoms of the jackets supplied With boiler Water under control of a suitable thermostatic or other valve. l

Instead of admitting the high pressure steam directly to the high pressure cylinders Such steam may be admitted to the jackets and thence to the high pressure vcylinders from which it could be exhausted to the jackets of the low pressure cylinders. ln this case it would be necessari; to separate t ure cyl indersI he jackets of thc high pi trom those oft the low pressure cylinders.

Three cylinder engines can be compounded in accordance with the foregoing principles by expanding from one high pressure cylinder to two low pressure cylinders, and four cylinder sets by expansion from one cylinderto the other three but in this latter case more jacket or receiver space will be required in order to maintain satisfactory steam distribution to the low pressure cylinders than in the lformer cases. Eight cylinders can be readily compounded from two high pressure to six low pressure cylinders, and in this case the jacket space will be ample to insure the maintenance of satisfactory steam distribution.

lVhat I claim and desire ters Patent is l. A l1uilticylinder to secure by Letinternal combustion engine adapted to operate partially under 1e backs of the` steam i; ed expansively at t combustu'mengine cylinders pistons wherein the steam spaces of one or more of the combustion engine cylinders is or are supplied with high pressure steam and the exhaust steam Vfor these cylinders is used as low preslsure steam in another combustion cylinder or cylindersv whose total steam space is of greater volume than the total steam-space of thc cylinder or cylinders to which the high pressure steam is supplied.

2. A multi-cylinder internal combustion engine adapted to operate partially under steam used expansively at the backs of the coinl'uistion engine pistons `wherein all the cylinr'lcrs are oi? the same diameter and have steam .spaces ofthe same volume and one or more of them are supplied with high presg sure steam and operate as high pressure 'steam cylinders and exhaust to a greater number of cylinders which operate as low pressure cylinders and exhaust to atmosphere or a comlcnser.

3. A multi-cylinder internal combustion engine as claimed in claim l in which each cylinder is provided with a jacket into which steam is admitteth means whereby such jackets are in f :oummnication with each other :nuttin-ther means whereby the steam su )plied tosaid jacket is subsequently distri uned tothe cvlindms and utter expansion in said cylinders is exhausted.

ln witness whereof l alliX mv signature. 

